Ad all users to nnew level

Hi

Installed Membership and wanna put all registred members into a new level. Have a default visitors level and my created “Members” level. Wanna put all in “Members” level.

Any easy way to do this? Also want all all new members to end up in that level “Members”.

Now my 2 two levels have 0 members in them and all old registred members stand outside of the levels.

Andreas